It's rare that President Barack Obama and Republican National Committee Chairman Reince Priebus agree. In recent weeks, they both have said that the presidential nominating process is not rigged.
They are right. That hasn't stopped those displeased with the results -- establishment Republicans and Democrats who support Vermont Sen. Bernie Sanders -- from insisting on changing the rules for the next election.
Some tweaks are always in order, but both sides are trying to craft procedures that would have worked to their benefit this time. Like generals fighting the last war, experience shows this rarely works and often backfires.
"Every time someone tries to game out this system," says Benjamin Ginsberg, the leading Republican election lawyer, "the great law of unintended consequences rears its head."
For the 2016 elections, Republicans wanted to compress the initial primaries and limit debates so that an establishment favorite -- Jeb Bush for most --- could wrap up the nomination early. Concurrently, conservatives insisted on the early Southern contests -- what became known as the SEC primary -- to better ensure victory for an ideologically suitable candidate.